{"product_id":"emx-5400-1-kpx100-weatherproof-dual-relay-keypad-access-control-copy","title":"TRES-400-DEFENDER Quad Relay Access Controller for Multi Gate Security Systems","description":"\u003cp\u003eDefender 400 is a quad relay access controller designed for secure management of multiple doors or gates within commercial and industrial facilities. It supports large user databases, real time communication, and reliable operation in both online and offline environments. The controller connects through TCP IP networks and works with standard Wiegand readers for flexible integration. With support for multiple relays, exit devices, and door monitoring inputs, it enables efficient traffic flow and centralized access management for vehicle and pedestrian entry points. :contentReference[oaicite:0]{index=0}\u003c\/p\u003e \u003cul\u003e \u003cli\u003eControls up to four gates or doors using four output relays\u003c\/li\u003e \u003cli\u003eSupports up to 20000 users with large event storage\u003c\/li\u003e \u003cli\u003eWorks with standard 26 bit Wiegand readers\u003c\/li\u003e \u003cli\u003eTCP IP communication with real time access processing\u003c\/li\u003e \u003cli\u003eOnline and offline operation during network interruptions\u003c\/li\u003e \u003c\/ul\u003e","brand":"EMX","offers":[{"title":"Default Title","offer_id":43749196693540,"sku":null,"price":371.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/6351\/8500\/files\/TRES-400-DEFENDERQuadRelayAccessControllerforMultiGateSecuritySystems.png?v=1772694386","url":"https:\/\/activeproaero.com\/products\/emx-5400-1-kpx100-weatherproof-dual-relay-keypad-access-control-copy","provider":"Active-Pro Aero","version":"1.0","type":"link"}